(1. Department of Vascular Surgery, Weifang People′s Hospital, Weifang 261041, Shandong Province, China;2. Department of Interventional Angiology, Weifang Sunshine Union Hospital, Weifang 261000, Shandong Province, China;3. Intervention Center, Anqiu Hospital of Traditional Chinese Medicine, Anqiu 262100, Shandong Province, China)